i am pretty careful when it comes to this stuff. but i once saw a coworker drink a soda with cigarette butts in it. he didn't flip out, but i gagged for him. ugh! and a few times--i began eating a piece of toast and realized there was mold on it! chucked it across the room like a chinese star. just the other day i was sweatin' some cheerios with bananas and we had milk that was two days past the expiration date. i sniffed it, shook it, gave it serious thought for like ten minutes and--BY GOLLY i had some cheerios with old milk and bananas! it was skim milk so i don't think it's as bad, but i don't know for sure..